package com.epalmpay.util;

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;

import org.apache.commons.lang3.StringUtils;


public class PropertyCopyUtil {
	
    /** 
     * 利用反射实现对象之间属性复制 
     * @param from 
     * @param to 
     */  
    public static void copyProperties(Object from, Object to) throws Exception {  
        copyPropertiesExclude(from, to, null);  
    }  
      
    /** 
     * 复制对象属性 
     * @param from 
     * @param to 
     * @param excludsArray 排除属性列表 
     * @throws Exception 
     */  
   
    public static void copyPropertiesExclude(Object from, Object to, String...  excludsArray) throws Exception {  
        List<String> excludesList = null;  
        if(excludsArray != null && excludsArray.length > 0) {  
            excludesList = Arrays.asList(excludsArray); //构造列表对象  
        }  
        Method[] fromMethods = from.getClass().getMethods();  
        //Method[] fromMethods1 = from.getClass().getDeclaredMethods();
        //Method[] fromMethods2 = from.getClass().getMethods();
        //Method[] fromMethods = ArrayUtils.addAll(from.getClass().getDeclaredMethods(),from.getClass().getMethods());
        Method[] toMethods = to.getClass().getDeclaredMethods();  
        Method fromMethod = null, toMethod = null;  
        String fromMethodName = null, toMethodName = null;  
        for (int i = 0; i < fromMethods.length; i++) {  
            fromMethod = fromMethods[i];  
            fromMethodName = fromMethod.getName();  
            if (!fromMethodName.startsWith("get"))  
                continue;  
            //排除列表检测  
            if(excludesList != null && excludesList.contains(fromMethodName.substring(3).toLowerCase())) {  
                continue;  
            }  
            toMethodName = "set" + fromMethodName.substring(3);  
            toMethod = findMethodByName(toMethods, toMethodName);  
            if (toMethod == null)  
                continue;  
            
            //Logger logger = Logger.getLogger(PropertyCopyUtil.class);
            //logger.info(toMethodName);
            Object value = fromMethod.invoke(from, new Object[0]);  
            if(value == null)  
                continue;  
            //集合类判空处理  
            if(value instanceof Collection) {  
                Collection newValue = (Collection)value;  
                if(newValue.size() <= 0)  
                    continue;  
            }  
            toMethod.invoke(to, value);  
        }  
    }  
      
    
    
    /** 
     * 复制对象属性 
     * @param from 
     * @param to 
     * @param
     * @throws Exception 
     */  
   
    public static void copyPropertiesNotNull(Object from, Object to) throws Exception {  
       
        Method[] fromMethods = from.getClass().getMethods();  
        Method[] toMethods = to.getClass().getDeclaredMethods();  
        Method fromMethod = null, toMethod = null;  
        String fromMethodName = null, toMethodName = null;  
        for (int i = 0; i < fromMethods.length; i++) {  
            fromMethod = fromMethods[i];  
            fromMethodName = fromMethod.getName();  
            if (!fromMethodName.startsWith("get"))  
                continue;  
            //排除列表检测   
            toMethodName = "set" + fromMethodName.substring(3);  
            toMethod = findMethodByName(toMethods, toMethodName);  
            if (toMethod == null)  
                continue;  
            
            //Logger logger = Logger.getLogger(PropertyCopyUtil.class);
            //logger.info(toMethodName);
            Object value = fromMethod.invoke(from, new Object[0]);  
            if(value == null||StringUtils.isBlank(value.toString())) {
            	continue ; 
            } 
                
            //集合类判空处理  
            if(value instanceof Collection) {  
                Collection newValue = (Collection)value;  
                if(newValue.size() <= 0)  
                    continue;  
            }  
            toMethod.invoke(to, value);  
        }  
    }  
    
    
    /** 
     * 包含 父级 复制对象属性 
     * @param from 
     * @param to 
     * @param
     * @throws Exception 
     */  
   
    public static void copyPPropertiesNotNull(Object from, Object to) throws Exception {  
       
//        Method[] fromMethods = from.getClass().getMethods();  
//        Method[] toMethods = to.getClass().getDeclaredMethods(); 
    	 ArrayList<Method> fromDeclare= getDeclaredMethod(from);
    	  Method[] fromMethods =new Method[fromDeclare.size()];
    	  fromDeclare.toArray(fromMethods);
    	  
    	  ArrayList<Method> toDeclare= getDeclaredMethod(to);
    	  Method[] toMethods =new Method[toDeclare.size()];
    	  toDeclare.toArray(toMethods);
    	 
        Method fromMethod = null, toMethod = null;  
        String fromMethodName = null, toMethodName = null;  
        for (int i = 0; i < fromMethods.length; i++) {  
            fromMethod = fromMethods[i];  
            fromMethodName = fromMethod.getName();  
            if (!fromMethodName.startsWith("get"))  
                continue;  
            //排除列表检测   
            toMethodName = "set" + fromMethodName.substring(3);  
            toMethod = findMethodByName(toMethods, toMethodName);  
            if (toMethod == null)  
                continue;  
            
            //Logger logger = Logger.getLogger(PropertyCopyUtil.class);
            //logger.info(toMethodName);
            Object value = fromMethod.invoke(from, new Object[0]);  
            if(value == null||StringUtils.isBlank(value.toString())) {
            	continue ; 
            } 
                
            //集合类判空处理  
            if(value instanceof Collection) {  
                Collection newValue = (Collection)value;  
                if(newValue.size() <= 0)  
                    continue;  
            }  
            toMethod.invoke(to, value);  
        }  
    }  
    
    
    public static ArrayList<Method> getDeclaredMethod(Object object){  
    	ArrayList<Method> methodsResult=new ArrayList<Method>();          
        for(Class<?> clazz = object.getClass() ; clazz != Object.class ; clazz = clazz.getSuperclass()) {  
            try {  
            	Method[]  methods = clazz.getDeclaredMethods() ;   
            	methodsResult.addAll(Arrays.asList(methods));
            } catch (Exception e) {  
                //这里甚么都不能抛出去。  
                //如果这里的异常打印或者往外抛，则就不会进入              
            }  
        }  
        return methodsResult;  
    }  
    
    /** 
     * 对象属性值复制，仅复制指定名称的属性值 
     * @param from 
     * @param to 
     * @param includsArray 
     * @throws Exception 
     */    
    public static void copyPropertiesInclude(Object from, Object to, String... includsArray) throws Exception {  
        List<String> includesList = null;  
        if(includsArray != null && includsArray.length > 0) {  
            includesList = Arrays.asList(includsArray); //构造列表对象  
        } else {  
            return;  
        }  
        Method[] fromMethods = from.getClass().getMethods();  
        Method[] toMethods = to.getClass().getDeclaredMethods();  
        Method fromMethod = null, toMethod = null;  
        String fromMethodName = null, toMethodName = null;  
        for (int i = 0; i < fromMethods.length; i++) {  
            fromMethod = fromMethods[i];  
            fromMethodName = fromMethod.getName();  
            if (!fromMethodName.startsWith("get"))  
                continue;  
            //排除列表检测  
            String str = fromMethodName.substring(3);  
            if(!includesList.contains(str.substring(0,1).toLowerCase() + str.substring(1))) {  
                continue;  
            }  
            toMethodName = "set" + fromMethodName.substring(3);  
            toMethod = findMethodByName(toMethods, toMethodName);  
            if (toMethod == null)  
                continue;  
            Object value = fromMethod.invoke(from, new Object[0]);  
            if(value == null)  
                continue;  
            //集合类判空处理  
            if(value instanceof Collection) {  
                Collection newValue = (Collection)value;  
                if(newValue.size() <= 0)  
                    continue;  
            }  
            toMethod.invoke(to, new Object[] {value});  
        }  
    }  
      
      
  
    /** 
     * 从方法数组中获取指定名称的方法 
     *  
     * @param methods 
     * @param name 
     * @return 
     */  
    public static Method findMethodByName(Method[] methods, String name) {  
        for (int j = 0; j < methods.length; j++) {  
            if (methods[j].getName().equals(name))  
                return methods[j];  
        }  
        return null;  
    }  
}  